As confidence in the forecast continues to grow, meteorologists say there could be heavy snowfall, particularly north of Interstate 10, with some areas potentially seeing up to five inches of snow, according to a National Weather Service update on Sunday.

HOUSTON — All Houston airports will close Tuesday due to the winter storm expected in the area, officials said Sunday. An arctic front with wintry precipitation is expected to move into the area overnight Monday.

"I've been convinced that we are about to experience a very serious and dangerous weather episode," Whitmire said during Sunday's press conference.

This week, hazardous driving conditions due to snow and icy roads across the area are expected to impact government entities, businesses, and services.

Snow up to five inches, sleet and ice accumulations are possible for the Greater Houston area Jan. 21-22, according to the National Weather Service.

Houston and Harris County leaders discussed the region's preparations for upcoming winter weather. HARRIS COUNTY, Texas — Harris County Judge Lina Hidalgo and Houston Mayor John Whitmire came together Saturday to discuss the city and county's preparations for upcoming winter weather.

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The watch is in effect from Monday evening through Tuesday afternoon. Heavy accumulations of sleet and snow are possible.

A chance of snow showers and sleet has emerged in the forecast. Here are five things we know so far about next week's freezing temperatures.

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"I've been convinced that we are about to experience a very serious and dangerous weather episode," Whitmire said during Sunday's press conference.